Flat mimeograph.



UNI TED MAX KLAGZKO, OF RIGA, RUSSIA.

FLAT MIMEOG-RAPI-I.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed April 5, 1907. Serial No. 366,639.

To all whom it may concern:

Be it known that I, MAX KLAozKo, manufacturer, and resident of 19 Scheunenstrasse, Riga, Russia, have invented certain new and useful Improvements in Flat Mimeographs, of which the following is a full, clear,

and exact description, reference being had to the accompanying drawings, forming part of this specifica tion.

This invention relates to a flat mimeograph and according thereto the printing is effected by means of a ribbon which is furnished with a suitable ink and which can be variously adjusted in relation to the printing bed. The ribbon may be so moved over two rollers which are secured on two opposite sides of the mimeograph as to unwind from the one roller and to wind around the other. To avoid the necessity of having to use a ribbon which has previously been pro,- vided with ink, or to insuretha-t the ribbon is always sulliciently supplied with ink, the rollers may, as here tofore, be so arranged in relation to suitable ink reservoirs as to become thoroughly impregnated with ink when wound up and unwound.

The accompanying drawings represent an apparatus in accordance withthis invention, wherein Figure 1 is a vertical section through the mimeograph showing the cover removed therefrom. Fig. 2 is a vertical section through the lower and upper frames, for maintaining the stencil in position. Fig. 3 is an elevation of the mimeograph parallel in vertical section with the frame removed, and Fig. 4 is an end elevation thereof.

The fiat mimeograph consists of the printing bed 6 and the ink ribbon b which is moved on rollers c the axles of which are mounted in any suitable manner on opposite sides of the apparatus.

To avoid the necessity of having to use previously prepared ribbons and to insurethat the ribbon is always suflicientlysupplied with ink the roller 0 may, however, as has heretofore been usual, be arranged in ink receptacles which are suitably supplied with the ink. These receptacles are furnished with studs by means of which they can be conveniently removed and put back again. A piece of silk gauze or the like i together with 'the wax stencil 0, is held rigidly in position between the two frames on and n which are firmly clamped together by means of clamping pieces 1:. There is provided a drawer g, wherein the necessary accessories can be kept and a cover It.

The apparatus is used by impregnating the ribbon b with any suitable ink such, for instance, as mimeograph or roneo ink and then placing it lightly upon the printing bed whereupon the wax stencil 0, which is to be used, is placed upon the ribbon and held there by means of the frames or n and the piece of silk gauze i. The copying is then effected as heretofore usual by placing the sheet on which the impression is to be made on top and pressing it firmly by means of a printing roller. Should the ink on that part of the ribbon of which use is made be somewhat faint, the ribbon is turned a little further whereby a fresh part not yet used is brought in contact with the printing bed.

In consequence of the fact that one and the same stencil is always placed upon a fresh part of the inking ribbon, the number of copies obtainable is limited only by the length of the ribbon. The apparatus, moreover, renders it possible to produce differently colored copies by previously providing the ribbon with the colors it is desired to employ. To prevent the different colored inks from running into each other, the parts of the ribbon of different colors are separated by a neutral strip which may be impregnated Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. In a duplicator, the combination of a casing, a printing bed, a sheet of silk, a stencil, a frame for holding said silk and stencil together over the printing bed. ink resor voirs mounted at each end of the casing, delivery and take-up rolls mounted in said reservoirs. and a ribbon can ried by said rolls adapted to iravel over said bed beneath the stencil.

2. In a duplicator, the combination of a casing. a print ing bed, a sheet of silk, a stencil. a sectional frame for holding said silk and stencil together over the printing bed. clamping means at each end of the frame, ink reservoirs mounted at each end of the casing, delivery and take-up rolls mounted in said reservoirs, and a ribbon carried by said rolls adapted to travel over said bed beneath the stencil.

In testimony whereof I have hereunto set my hand in presence of two subscribiug witnesses.

MAX KLACZKO.

Witnesses WoLDnAun I'IAUPT, IIENRY Hasrnn. 

